BR9815503A - Flat acoustic conversion device with permanent magnets with the surfaces of the magnetic poles sealed upwards - Google Patents

Flat acoustic conversion device with permanent magnets with the surfaces of the magnetic poles sealed upwards

Info

Publication number
BR9815503A
BR9815503A BR9815503-2A BR9815503A BR9815503A BR 9815503 A BR9815503 A BR 9815503A BR 9815503 A BR9815503 A BR 9815503A BR 9815503 A BR9815503 A BR 9815503A
Authority
BR
Brazil
Prior art keywords
magnetic poles
permanent magnets
turns
diaphragm
vibrant
Prior art date
Application number
BR9815503-2A
Other languages
Portuguese (pt)
Inventor
Sakuzo Denda
Toshiiku Miyazaki
Original Assignee
Sonic Window Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP1997007122U external-priority patent/JP3045743U/en
Application filed by Sonic Window Kabushiki Kaisha filed Critical Sonic Window Kabushiki Kaisha
Publication of BR9815503A publication Critical patent/BR9815503A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

<B>APARELHO PLANO DE CONVERSãO ACúSTICA COM MAGNETOS PERMANENTES COM AS SUPERFìCIES DOS PóLOS MAGNéTICOS VOLTADAS PARA CIMA<D> Os magnetos permanentes m18 e m28 e m38, cada um dos quais tendo um formato plano e retangular, são dispostos sobre uma culatra 20, com as superfícies dos pólos magnéticos voltadas para cima, de modo que as superfícies dos pólos magnéticos, cujas polaridades sejam diferentes, sejam dispostas alternadamente. Um diafragma vibrante 26 está disposto na superfície superior da culatra 20, de modo a estar em paralelo com as superfícies dos pólos magnéticos dos magnetos permanentes. Os pares de espiras L18, L28 e L38, os quais são enrolados em um formato de redemoinho e colocados nas superfícies superior e posterior do diafragma vibrante, são dispostos no diafragma vibrante 26 de modo a corresponderem aos magnetos permanentes m18, m28 e m38, respectivamente. Cada um dos pares de espiras L18, L28 e L38 é enrolado em um formato de redemoinho, de modo a ser substancialmente análogo à borda externa da superfície dos pólos magnéticos de cada um dos magnetos permanentes m18, m28 e m38. A periferia interna de cada espira está situada em uma área que está fora de uma posição que corresponde à borda externa da superfície dos pólos magnéticos, e as porções periféricas externas das espiras não se sobrepõem entre si. Como resultado, os pares de espiras L18, L28 e L38 ligam-se apenas aos campos magnéticos cujas orientações estejam ao longo da superfície do diafragma vibrante.<B> APPLIANCE ACOUSTIC CONVERSION PLAN WITH PERMANENT MAGNETS WITH THE SURFACES OF MAGNETIC POLES FACING UP <D> The permanent magnets m18 and m28 and m38, each of which have a flat and rectangular shape, are arranged on a 20 yoke. with the surfaces of the magnetic poles facing upwards, so that the surfaces of the magnetic poles, whose polarities are different, are arranged alternately. A vibrating diaphragm 26 is arranged on the upper surface of the yoke 20, so as to be in parallel with the surfaces of the magnetic poles of the permanent magnets. The pairs of turns L18, L28 and L38, which are wound in a swirl shape and placed on the upper and rear surfaces of the vibrant diaphragm, are arranged on the vibrant diaphragm 26 to correspond to the permanent magnets m18, m28 and m38, respectively . Each of the pairs of turns L18, L28 and L38 is wound in a swirl shape, so as to be substantially analogous to the outer edge of the surface of the magnetic poles of each of the permanent magnets m18, m28 and m38. The inner periphery of each loop is located in an area that is outside a position that corresponds to the outer edge of the surface of the magnetic poles, and the outer peripheral portions of the turns do not overlap. As a result, the pairs of turns L18, L28 and L38 bind only to magnetic fields whose orientations are along the surface of the vibrant diaphragm.

BR9815503-2A 1997-07-09 1998-06-05 Flat acoustic conversion device with permanent magnets with the surfaces of the magnetic poles sealed upwards BR9815503A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP19797197 1997-07-09
JP1997007122U JP3045743U (en) 1997-07-29 1997-07-29 Automotive flat speaker
PCT/JP1998/002503 WO1999003304A1 (en) 1997-07-09 1998-06-05 Planar acoustic transducer

Publications (1)

Publication Number Publication Date
BR9815503A true BR9815503A (en) 2000-11-14

Family

ID=26341385

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9815503-2A BR9815503A (en) 1997-07-09 1998-06-05 Flat acoustic conversion device with permanent magnets with the surfaces of the magnetic poles sealed upwards

Country Status (11)

Country Link
US (1) US6480614B1 (en)
EP (1) EP0996311B1 (en)
JP (1) JP3159714B2 (en)
KR (1) KR100352859B1 (en)
CN (1) CN1159949C (en)
BR (1) BR9815503A (en)
ID (1) ID23968A (en)
MY (1) MY123921A (en)
RU (1) RU2179788C2 (en)
TW (1) TW413994B (en)
WO (1) WO1999003304A1 (en)

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US8942408B1 (en) * 2011-07-22 2015-01-27 James Joseph Croft, III Magnetically one-side driven planar transducer with improved electro-magnetic circuit
US8983112B2 (en) * 2012-03-14 2015-03-17 Harman International Industries, Incorporated Planar speaker system
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CN107370249B (en) 2012-03-14 2020-06-09 索尼公司 Power transmitting device and non-contact power supply system
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KR102312125B1 (en) 2017-07-03 2021-10-12 엘지디스플레이 주식회사 Display apparatus
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Also Published As

Publication number Publication date
WO1999003304A1 (en) 1999-01-21
EP0996311B1 (en) 2007-03-21
MY123921A (en) 2006-06-30
ID23968A (en) 2000-06-14
KR20010014345A (en) 2001-02-26
EP0996311A4 (en) 2006-03-29
EP0996311A1 (en) 2000-04-26
TW413994B (en) 2000-12-01
RU2179788C2 (en) 2002-02-20
JP3159714B2 (en) 2001-04-23
CN1262857A (en) 2000-08-09
US6480614B1 (en) 2002-11-12
KR100352859B1 (en) 2002-09-16
CN1159949C (en) 2004-07-28

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Legal Events

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B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ARTIGO 8O COMBINADO COM ARTIGO 13 DA LPI.

B12B Appeal against refusal [chapter 12.2 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 16A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2258 DE 15/04/2014.